Insider Buying: Senestech (NASDAQ:SNES) Major Shareholder Purchases $19,500.00 in Stock

Posted by Doug Wharley on Aug 13th, 2026

Senestech, Inc. (NASDAQ:SNES – Get Free Report) major shareholder Glenbrook Capital Management acquired 15,000 shares of Senestech stock in a transaction on Thursday, August 6th. The shares were bought at an average price of $1.30 per share, for a total transaction of $19,500.00. Following the completion of the purchase, the insider directly owned 1,072,804 shares in the company, valued at $1,394,645.20. The trade was a 1.42% increase in their ownership of the stock. The purchase was disclosed in a filing with the Securities & Exchange Commission, which is available at this link. Major shareholders that own more than 10% of a company’s stock are required to disclose their transactions with the SEC.

Glenbrook Capital Management also recently made the following trade(s):

On Friday, August 7th, Glenbrook Capital Management bought 6,490 shares of Senestech stock. The stock was purchased at an average price of $1.30 per share, with a total value of $8,437.00.
On Monday, July 20th, Glenbrook Capital Management acquired 35,000 shares of Senestech stock. The stock was acquired at an average cost of $1.47 per share, with a total value of $51,450.00.
On Tuesday, June 30th, Glenbrook Capital Management purchased 35,000 shares of Senestech stock. The stock was acquired at an average cost of $1.51 per share, with a total value of $52,850.00.
On Monday, June 22nd, Glenbrook Capital Management bought 5,000 shares of Senestech stock. The stock was bought at an average price of $1.66 per share, with a total value of $8,300.00.
On Wednesday, June 17th, Glenbrook Capital Management acquired 3,264 shares of Senestech stock. The shares were bought at an average price of $1.61 per share, with a total value of $5,255.04.
On Monday, June 8th, Glenbrook Capital Management purchased 7,000 shares of Senestech stock. The shares were purchased at an average price of $1.61 per share, with a total value of $11,270.00.
On Friday, June 5th, Glenbrook Capital Management bought 13,159 shares of Senestech stock. The stock was purchased at an average price of $1.57 per share, with a total value of $20,659.63.
On Thursday, June 4th, Glenbrook Capital Management acquired 8,230 shares of Senestech stock. The stock was acquired at an average cost of $1.65 per share, with a total value of $13,579.50.
On Monday, May 18th, Glenbrook Capital Management purchased 10,000 shares of Senestech stock. The shares were acquired at an average cost of $1.59 per share, for a total transaction of $15,900.00.
On Friday, May 15th, Glenbrook Capital Management bought 7,120 shares of Senestech stock. The shares were bought at an average cost of $1.65 per share, for a total transaction of $11,748.00.

Senestech Price Performance

Shares of NASDAQ:SNES opened at $1.26 on Thursday. Senestech, Inc. has a 12 month low of $1.15 and a 12 month high of $5.35. The stock has a market cap of $6.86 million, a price-to-earnings ratio of -0.92 and a beta of 0.28. The stock’s 50 day moving average price is $1.48 and its 200 day moving average price is $1.70. The company has a debt-to-equity ratio of 0.02, a current ratio of 6.78 and a quick ratio of 5.81.

Senestech (NASDAQ:SNES – Get Free Report) last issued its quarterly earnings results on Wednesday, August 5th. The company reported ($0.35) earnings per share for the quarter, beating analysts’ consensus estimates of ($0.37) by $0.02. Senestech had a negative net margin of 294.73% and a negative return on equity of 71.89%. The company had revenue of $0.77 million during the quarter, compared to the consensus estimate of $0.60 million. Equities research analysts anticipate that Senestech, Inc. will post -1.57 earnings per share for the current fiscal year.

Analyst Upgrades and Downgrades

Separately, Weiss Ratings downgraded shares of Senestech from a “sell (d-)” rating to a “sell (e+)” rating in a research report on Tuesday. One research analyst has rated the stock with a Sell rating, Based on data from MarketBeat.com, Senestech has a consensus rating of “Sell”.

Read Our Latest Report on SNES

Institutional Trading of Senestech

Large investors have recently modified their holdings of the company. Geode Capital Management LLC acquired a new stake in shares of Senestech in the second quarter worth $59,000. Jane Street Group LLC acquired a new position in Senestech during the 2nd quarter valued at $161,000. Millennium Management LLC bought a new stake in Senestech in the 3rd quarter valued at $126,000. Diversify Advisory Services LLC bought a new stake in Senestech in the 4th quarter valued at $34,000. Finally, Renaissance Technologies LLC grew its position in Senestech by 35.2% in the 4th quarter. Renaissance Technologies LLC now owns 142,800 shares of the company’s stock worth $306,000 after purchasing an additional 37,165 shares during the last quarter. 5.19% of the stock is owned by institutional investors.

About Senestech

(Get Free Report)

SenesTech, Inc (NASDAQ: SNES) is a biotechnology company specializing in non-lethal pest management solutions. The company’s core focus is the development and commercialization of fertility-based control methods for commensal rodents, providing an alternative to traditional rodenticides. By targeting the reproductive cycle of rats, SenesTech aims to reduce rodent populations over time without the use of toxic chemicals, offering a more sustainable approach for pest management professionals.

The company’s flagship product, ContraPest®, is an EPA-registered liquid bait that disrupts rodent reproduction.